Device for supplying cooling-water.



H. H. SOUTHWORTH.

DEVICE FOR SUPPLYING COOLING WATER.

APPLICATION FILED JAN. 15. 1913.

1.1391461., Patented m7111915.

HARRISON H. SGUTHWORTH, 0F CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE ICELESS lJAC-INE COMPANY, OF CLEVELAND, Oli-110, A CORPOR- TON OF 10H10.

DEVICE FOR. SUPLYING COOLNGr-VATER.

Specification of Letters atent. Payrrngd Tg2-y ful? jgs insa/lei.

Application filed January 15, 1913. Serial No. 742,097.

T0 all whom it may concern Be it known that L'HARRISON l-l. SOUTH- won'ri, a citizen o1c the United States, and a resident of Cleveland, in the county of Cuyahoga and State of Ohio, 4have invented certain new and useful lmprovements in Devices for Supplying Cooling-Water; and l do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in devices for supplying cooling water for use` with refrigerating apparatus and consists of the matters hereinafter described and more particularly pointed out in the appended claims.

ln the drawings Figure 1 is a view representing a rear end elevation, partially broken away, of a refrigerating apparatus, provided with my improved means for supplying cooling water. Fig. 2 is a view representing, on an enlarged scale, a vertical central section illustrating the novel features of my improvement. Fig. 3 is a vertical cross section on a reduced scale of the upper part of the apparatus shown in Fig. 1.

The invention is shown herein as'applied to a refrigerating apparatus of the absorption type, in which are provided two generator-absorbers which alternately act as generators and as absorbers, substantially as described in the application filed by Harri son H. Southworth and Fred W. l/Volf, Serial No. 727,353,iled October 23rd, 1912. lt will be understood however' that the invention is not limited in its application to this type of apparatus but may be 'applied to any apparatus requiring the use of cooling water in its operation. i

Referring now to the drawings, 10, 10 indicate the two generator-absorbers which are supported above an elongated tank 11 in which is contained the liquid condenser and receiver coil 12. 13 indicates a water discharge nozzle adapted to be shifted to discharge the cooling water on either of the drums 10. 14 indicates the burner which is capable of shifting movement between the two drums and is adapted to heat'one or the othery as the case may be. The water discharged through the nozzle 13, after it leaves the particular drum to which it is being supplied, falls into the tank 11 in which it accumulates so as to cover the liquid condenser and receiver coil 12, the level of the water in said tank being determined byv an overflow pipe 15.

' The water from the nozzle 13, if supplied directly i'rom a source oi water supply at the usual temperature of such water, will not in its passage over the hot generatorabsorber drum cool it, nor in its cooling effect upon the receiver and condenser coil 12 acquire all of the heat units which it is capable of taking up and will usually be still cold enough to be efficiently used again as a cooling agent for the generator-absorber and condenser. rEhe object of the present invention is to provide a device by means of whichthe cooling water inthe tank 11 may be mixed with the fresh incoming stream of cooling water in automatically varying proportions depending upon the temperature of the water in the tank so as to economize the use of the water from the source of supply. rlhe advantage of such a device will be realized when it is remembered that one of the two main sources of expense involved in the operation of a refrigerating apparatus is the cost of the cooling water.

ln carrying out my invention as herein described, l provide a valve mechanism in conjunction with an aspirating device which is adapted to draw up with` the stream of fresh water from the source of supply, a certain proportion of the water in the cooling tank, the valve mechanism which controls the size of the stream ot fresh water depending for its operation upon the temperature of the water in thetank.

Referring .now to that embodiment of my.,

invention illustrated in the drawings, 16 indicates a pipe which is connected at its upper end with the oscillating discharge nozzle 18, and depends at its lower end into the body of water contained in the tank 11. 17 indicates a casing connected to the lower end of said pipe 16, and preferably located near the bottom of the tank where the water is coldest. Said casing has at its lower end a valve chamber 18 and a passage 19 opening laterally 'from said chamber. 20 indi cates a pipe connected with the casing and communicating with said passage 19, said pipe leading from a source of cooling water supply and being adapted to direct a stream of water into the valve chamber under a head or pressure.

Within the casing and communicating with the .upper side of the Valve chamber 18 is formed a nozzle 22, which is provided at its lower end with a conical valve seat 23. 24 indicates a needle-valve adapted to co-act with the seat 23 and having a stem 25 which projects downwardly through the lower end of the casin .Said lower end is closed by a suitable stung box 26, in which the valvestem lhas reciprocating bearing.

Openings or ports 27 are formed in the casing Wall about' the nozzle, 22 in such manner that when a stream of water is discharged through the nozzle, the water surrounding the casing will be sucked or drawn into the casing and will be carried with said stream up through the pipe 16. Apparently the amount of water drawn in from about the casing will depend upon the size of and resulting velocity of fiow of thestream discharged through the nozzle, so that the proportion of water taken from the tank may be varied to increase or diminish it, by increasing or diminishing the distance of the valve 24 from its seat 23, thus increasing the size of the stieam passing through the nozzle andproportionately diminishing its speed or vice versa.

Clearly the proportion of cooling water from the tank to be mixed with the fresh incoming stream from the source of supply, must be less when the water in the cooling tank is warm than when it is cold, and therefore I provide in connection with the valve a thermostatic device for controlling the opening and closing movement thereof which depends for its operation upon the temperature of the water in the tank. As a most convenient and efficient device of the kind in the case of a refrigerating apparatus of the absorption type, I make use of the-condensing and receiving coil itself. Apparently the pressure therein will vary with the temperature of the water surrounding it. Y

Iprovidea casing 28 connected by a pipe 29 with the condensing coil and containing a diaphragm 30 which is subjected to the pressure in said condenser. 31 indicates a stem arranged to be actuated by the movement of the diaphragmunder the pressure of said condenser. These parts may be of any familiar or desired construction.

32 indicates a lever yfulcrumed to a lug 33 fixed to the casing on one side'of the stem 31 and at its other end having pivotal connection with the lower end of the valve stem 25.

34 indicates a iixed bar having a depending arm 35 the lower end of which is adapted to act as a stop to limit the upward movement"v of the lever 32. A set-screw 36 threaded through the lever is adapted to engage at its end against the stop-arm 35, said set-screw providing means for adjusting the engaging part of the arm relatively to the stop.V 38 indicates a coiled spring the tension of which is carefully predetermined and which connects the lever 32 with the fixed bar 34. As shown, the said spring is connected to the bar 34 by a bolt 37 and nuts 39 for purposes of adjusting the tension.

The operation of the device is apparent from the above description. The stream of fresh water from-the supply pipe 20 discharges through the nozzle 22 into the pipe 16 leading to the discharge .pipe 13. Water from the tank`is drawn with said stream through the openings 27 in the casing. When the water in the tank surrounding the condenser is cold there is a corresponding pressure in the condenser acting upon the diaphragm 30 which, bein insuifcient to overcome the tension o the spring 38, allows the valve to stand at a minimum distancefrom its seat, thus causing a small stream at high velocity to pass 4through the nozzle 22 so as to draw in with said stream a large proportion of water from the tank. As the temperature of the water-in the tank increases, the pressure in 'the condenser and upon the diaphragm 30 increases in proportion and causes a proportionate enlargement of the Valve opening. This permits a larger stream of fresh water at slower speed to be discharged through the nozzle 22 with the result that a smaller proportion of water from the tank is drawn in with said stream.

The stop 35 prevents a complete closing of the valve on its seat so that a minimum discharge of fresh water is always discharged through the nozzle 22, this being necessary in order to produce the required indrawing of water from the tank at all times.

I claim as my invention 1. The combination of a member'to be cooled, means for supplying cooling water to such member, a receptacle for receiving the water iiowing from such member, means directing the same to the member to be cooled, and means responsive to the temperature of the water in the receptacle for controlling theproportio'ns of the mixture.

2. A device for supplying cooling water, comprising in combination with a receptacle to receive the water, and a main water supplypipe, an auxiliary supply pipe depending into saidreceptacle below the water level therein, an aspirating device interposed between said two pipes, a valve for controlling the flow through said aspirating device, said valve having. limited movement toward its Yfor mixing. used Water with fresh Water and areaal.

an auxiliary supply pipe depending lintol said receptacle below the Water level therein, a casing connected to said auxiliary pipe, a nozzle located Within said casing adapted to discharge into said auxiliary supply pipe, the casing being provided with inlet openings about said nozzle and With a valve chamber opening into the inlet end of said nozzle, means connecting-said main supplypipe with said valve chamber, a valve controlling the How from the main supply pipe limiting the movement of the valve toward its seat, ,and a thermostatic device located in said receptacle and operatively connected with said valve to control its movement.

4. ln a refrgerating apparatus, in combination with a generator absorber, a device for discharging cooling Water on said genereter-absorber, a Water tank containing said condenser and arranged to receive the cooling Water after it leaves said generatorabsorber, a main Water supply pipe adapted to direct Water tol said discharging device, means for forcing Water from the tank with the Water from the; main supply pipe, and

thermostatic means acting to automatically determine the proportions of Water from the main supply pipe and from the tank directed to said discharging. device.

' 5. ln a refrigerating apparatus, in combination with a generator-absorber, a device for discharging cooling Water on said" genereter-absorber, a Water tank containing said condenser and arranged to receive the cooling water after it leaves said generatorabsorber, a mainwater supply pipe adapted to direct Water to said discharging device, means for mixing water from said tank with the Water from-themain supply .pipe and forcing the same to the discharging device, a diaphragm champerconnected With said condenser, a vdiaphragm located therein, and

'means actuated by saidfdiaphragm for determining the proportions of Water from the main supply pipe and from the tank directed to said discharging dev1ce.

6. ln a refrigeratmg apparatus in comu bination` with the condenser and a cooling ele @lll

Water tank .containing said condenser, a main Water supply pipe, an auxiliary supply pipe for supplying cooling water tor use in the apparatus, said auxiliary pipe dependingv 'into the tank below the Water level therein, a casing connected .to the lower end of said auxiliary pipe, a nozzle located within said casing adapted to discharge into said auxiliary pipe, the casing being provided with inlet openings about said nozzle, and with a valve chamber openinginte the inlet main supply pipe with said 'diaphragm chamber connected with said condenser, a diaphragm in said chamber,

and means intermediate said diaphragm and said valve closing -means acting to open said valve With'the expansion movement of .said diaphragm.

7. ln a refrigerating apparatus, the com.

bination with 'a generator-absorber, ci a device for directing cooling Water to the generator-absorber, a receptacle adapted to receive Water from the generator-absorber, means for mixing the same with fresh Water, means for taking Water from the receptacle for rousing, and a pressure-responsive device aected by the temperature of the Water Within the receptacle to control the proportions of the mixture of Water from the receptacle and fresh Water. i

8. ln a refrigerating apparatus, in combination with a generator-absorber, a device for discharging cooling water on said generator-absorber, a Water-tank adapted to receive said 'Water from 'said generator-absorber, a condenserl Within the tank, a main Water supply pipe adapted to direct Water to said discharging device, means for forcing water from the tank to be reused in said discharging device, and means acting to automatically increase the Water from the main water supply as the pressure in'the condenser approaches a predetermined point.

9. ln an ratus, the combination, with the condenser, of a vtank Yfor receiving cooling liquid from the still, means for supplying fresh water, means for discharging Water absorption refrigeration v appa? onto the still taken partly from the tank.

r l0. ln an absorption refrigeration apparatus, the combination, with the still and condenser, of a tank for receiving liquid from the still, meansy for supplying fresh water, means for discharging AWater onto the still, taken partly from the'tanl supply -and'partl-y from the Afresh water supply, and automaticv means adected by the temperature oi the water in the tank for regulating the ratio hetvveen such supplies to produce asubstantially constant temperature of Water discharged on the still.

ll. ln an absorption refrigeration appa#1 ratas, the combination, with a still and condenser, of a tank for liquid,l a conduit ior directing liquid onto the still from which it4 passes 'to said tank, and means contnollw hy ldd lill@ Mii some of the saine liquid of fresh liquidV onto the still.

12. In an absorption refrigeration appa;

ratus,.the combination, with a, still and condenser, of a; tank for liquidfe, conduit for directing liquid onto the still from which it passes to said tank, means for returning some of the vsaine liquid with an admixture of fresh liquid onto the still, and anautomatie device -ifected by the temperature of the used liquid for regulating the proportion .presencerof two witnesses,

between the -fresh and used liquid to give a substantially even temperature to the mlxture. v

vIn, testimony that I claim the foregoing as my invention I aliix my signature inthe Ianuary D. l1913.

HARRISON H. ,SOUTHWORTII Wis: vR. H. JAMIsoN,

R. HALL.

this third day of' 

